US president Donald Trump has struck a defiant tone after celebrating the release of the Mueller report as “a good day”.

He unleashed a volley of tweets on Friday, saying claims in the report by former administration officials that he tried numerous times to stop or influence the probe were “total bullshit”.

According to the 448-page report released on Thursday, Mr Trump discouraged witnesses from cooperating with prosecutors and prodded aides to mislead the public on his behalf to hamper the Russia probe he feared would cripple his administration.

The report’s bottom line largely tracked the findings revealed in Attorney General William Barr’s four-page memo a month ago – no Trump campaign collusion with Russia around the 2016 election but no clear verdict on obstruction.

But it added new layers of detail about Trump’s efforts to thwart the investigation.

Statements are made about me by certain people in the Crazy Mueller Report, in itself written by 18 Angry Democrat Trump Haters, which are fabricated & totally untrue. Watch out for people that take so-called “notes,” when the notes never existed until needed. Because I never....

...agreed to testify, it was not necessary for me to respond to statements made in the “Report” about me, some of which are total bullshit & only given to make the other person look good (or me to look bad). This was an Illegally Started Hoax that never should have happened, a...

Tweeting on a rainy Friday from his Mar-a-Lago club in Palm Beach, Florida, Mr Trump lashed out at people who cooperated with Robert Mueller’s team.

He said statements in the report made by some were “fabricated & totally untrue”.

The president alleged “notes” some people said they took after meetings did not exist but were created for the Mueller investigation.

“I never agreed to testify, it was not necessary for me to respond to statements made in the ‘Report’ about me, some of which are total bullshit & only given to make the other person look good (or me to look bad),” Mr Trump tweeted.

“This was an Illegally Started Hoax that never should have happened.”

On Thursday, Mr Trump had termed the Mueller report release “a good day” for him, adding “it was called no collusion, no obstruction”.

Both sides are using the findings to amplify well-rehearsed arguments about Mr Trump’s conduct.

President Donald Trump and First Lady Melania Trump are spending the Easter weekend at his Mar-a-Lago estate in Florida (Pablo Martinez Monsivais/AP)

Republicans are casting him as a victim of harassment, while Democrats are depicting the president as stepping far over the line to derail the investigation.

House Judiciary chairman Jerrold Nadler sent a letter to the Justice Department requesting that Mr Mueller himself testify before his panel “no later than May 23”.

The New York Democrat also issued a subpoena for Mr Mueller’s complete report as well as underlying documents, including grand jury evidence, which was redacted.

Grand jury evidence, including witness interviews, is normally off limits but can be obtained in court.

“We need the entire report, unredacted, and the underlying documents in order to make informed decisions,” Mr Nadler told ABC’s Good Morning America on Friday.